5.31.4 IS

The IS command is used to check if a parameter has a NULL reference.

If the condition check is true, then an OK status is returned, else a status of NO is returned.

Syntax:

Command	Keyword	Value	Developer notes
IS	NULL	value	Conditional. Parameter Name.
	NOT_NULL	value	Conditional. Parameter Name.

 

Example

IS NULL(ID)

 

IS NOT_NULL(SURNAME)